package com.sky.controller.user;

import com.sky.constant.StatusConstant;
import com.sky.entity.Dish;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@RestController("userDishController")
@RequestMapping("/user/dish")
@Api(tags = "C端-菜品浏览接口")
public class DishController {

    @Autowired
    private DishService dishService;
    @Autowired
    private RedisTemplate redisTemplate;
    /**
     * 根据分类id查询菜品
     *
     * @param categoryId
     * @return
     */
    @GetMapping("/list")
    public Result<List<DishVO>> list(Long categoryId) {
        //构造Redis中的key,规则：dish_分类id
        String key = "dish_" + categoryId;
        //查询Redis缓存
       List<DishVO> list  = (List<DishVO>) redisTemplate.opsForValue().get(key);
       //如果存在，直接返回
        if(list != null && list.size() > 0){
            return Result.success(list);
        }
        //如果不存在，查询数据库
        Dish dish = new Dish();
        dish.setCategoryId(categoryId);
        dish.setStatus(StatusConstant.ENABLE);//状态，1起售 0停售查询起售菜品
        //将查询出来的数据放入redis缓存数据
        list = dishService.listWithFlavor(dish);
        redisTemplate.opsForValue().set(key,list);
        return Result.success(list);

    }
}
